fix(ai-toolbar): tighten modifier and clipboard fallback guards

src/components/ai-toolbar.tsx

@@ -40,6 +40,15 @@ function useOs(): Os {
 	return os;
 }
 
+function createClipboardFallbackFile(blob: Blob, index: number): File {
+	const createdAt = Date.now() + index;
+	const extension = blob.type.split("/")[1] || "png";
+	return new File([blob], `clipboard-image-${createdAt}.${extension}`, {
+		type: blob.type,
+		lastModified: createdAt,
+	});
+}
+
 // ─── Shared shortcuts list (rendered in both HoverCard and Popover) ───────────
 
 function ShortcutsList({ os }: { os: Os }) {
@@ -220,9 +229,7 @@ export const AIToolbar = ({
 					for (const mimeType of typesToTry) {
 						try {
 							const blob = await clipboardItem.getType(mimeType);
-							files.push(
-								new File([blob], "clipboard-image", { type: mimeType }),
-							);
+							files.push(createClipboardFallbackFile(blob, files.length));
 							break; // got this item, move to next clipboardItem
 						} catch {
 							// NotFoundError — type not present, try next
@@ -310,6 +317,8 @@ export const AIToolbar = ({
 									if (
 										e.key === "Enter" &&
 										(e.metaKey || e.ctrlKey) &&
+										!e.shiftKey &&
+										!e.altKey &&
 										!aiLoading &&
 										canUseAi &&
 										(aiPrompt.trim() || hasImages)